<template>
	<div class="list" ref='wrapper'>
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{ this.currentCity }}</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div 
						class="button-wrapper" 
						v-for='item of hotcities' 
						:key="item.id"
						@click='handleCityClick(item.name)'
					>
						<div class="button">{{ item.name }}</div>
					</div>
				</div>
			</div>
			<div class="area" v-for='(item,key) of cities' :key='key' :ref='key'>
				<div class="title border-topbottom">{{ key }}</div>
				<div class="item-list" 
					v-for='innerItem of item' 
					:key='innerItem.id'
					@click='handleCityClick(innerItem.name)'
				>
					<div class="item border-bottom">{{ innerItem.name }}</div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
	import Bscroll from 'better-scroll'
	import { mapState,mapMutations } from 'vuex'
	export default{
		name: "CityList",
		props: {
			hotcities: Array,
			cities:  Object,
			letter: String
		},
		computed: {
		    ...mapState({
		    	currentCity: 'city'
		    })
		},
		methods: {
			// handleCityClick(city){
			// 	this.$store.dispatch("changeCity",city)
			// }
			handleCityClick(city){
				// this.$store.commit("changeCity",city)
				this.changeCity(city)
				this.$router.push("/")
			},
			...mapMutations(['changeCity'])
		},
		watch: {
			letter (){
				if( this.letter ){
					const element =  this.$refs[this.letter][0]
					this.scroll.scrollToElement(element)
				}
			}
		},
		mounted (){
			this.scroll = new Bscroll(this.$refs.wrapper)
		}
	}
</script>

<style lang='stylus' scoped>
	@import '~styles/varilbes.styl'
	.border-topbottom
		&:before
			border-color #ccc
		&:after
			border-color #ccc
	.border-bottom
		&:before
			border-color #ccc
	.list
		position absolute
		top 1.58rem
		left 0
		right 0
		bottom 0
		overflow hidden
		.title
			padding-left .2rem
			line-height .54rem
			background-color #eee
			color #666
			font-size .26rem
		.button-list
			padding .1rem .6rem .1rem .1rem
			overflow hidden
			.button-wrapper
				float left
				width 33.33%
				.button
					margin .1rem
					padding .1rem 0
					border .02rem solid #ccc
					border-radius 0.06rem
					text-align center
		.item-list 
			.item
				padding-left .2rem
				line-height .76rem
				
</style>